Oil Pipe Audi A4 B8 A5 8T Diesel Gearbox Cooler Line 8K0317823B

Oil Pipe Audi A4 B8 A5 8T Diesel Gearbox Cooler Line is an original drivetrain component designed for use with automatic transmissions in diesel-powered vehicles. As part of the Oil coolers and lines group, it is responsible for the stable drainage of oil to the gearbox cooler, which supports a safe operating temperature for the transmission. Using an OEM component allows for a technically correct repair without interfering with the vehicle's factory design.

Specifications and technical data

• SKU: 8K0317823B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317823B
• Substitutable numbers: 8K0317823B, 8K0 317 823 B
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Engine Oil Coolers & Lines

Function and application in the gearbox cooling system

The Oil Pipe Audi A4 B8 A5 8T Diesel Gearbox Cooler Line operates within the transmission oil circuit, connecting the automatic transmission to the oil cooler. It is responsible for:

• stable routing of the working medium between the transmission and the cooler,
• maintaining proper oil flow under varying load conditions,
• reducing the risk of automatic transmission overheating during city and highway driving.

By maintaining the factory geometry and internal diameter, the pipe supports proper oil pressure in the system, which is crucial for the durability of the automatic transmission.

Compatibility with the diesel unit and automatic transmission

The component has been designed to work with the diesel engine and automatic transmission in the Audi A4 B8 / A5 8T platform. This means that:

• its design takes into account the thermal characteristics of diesel units,
• it is adapted to the pressures and temperatures typical for automatic transmissions,
• it allows for installation at original mounting points without modifying the system.

Such a fit reduces the risk of leaks, collisions with other components, and issues with routing the pipe in the engine bay and undercarriage.

Benefits of using an original oil pipe

Using an original pipe from the Oil coolers and lines group instead of a worn or damaged element brings measurable operational benefits:

• preservation of the factory cooling characteristics of the transmission oil,
• reduction of the risk of transmission overheating under heavy load,
• consistency with other elements of the oil cooling system,
• suitability for repairs in accordance with manufacturer guidelines.

The used OEM component is a solution that allows you to combine service cost control with maintaining the design intended by the vehicle manufacturer.

Component condition and installation aspects

The pipe is offered as a used part, which in practice means the possibility of an economical repair of the gearbox oil cooling system while maintaining the original specification. Replacing the pipe is particularly recommended when there are:

• signs of leaks near the connectors or along the working sections,
• mechanical damage resulting from collisions or corrosion,
• problems with the operating temperature of the automatic transmission.

Selecting a pipe compatible with the Audi A4 B8 / A5 8T design facilitates workshop work and allows for a near plug-and-play installation, without the need to modify the pipe routing.

Expanding the oil cooling system in an Audi

If you are planning a comprehensive repair or upgrade of the gearbox oil cooling area in your Audi and need other elements from the same group, such as additional oil pipes, oil coolers, or system connectors, check the available parts in the Audi oil coolers and lines category.

During periods of high temperatures, it is worth ensuring the full efficiency of the engine and gearbox cooling system – you can find more practical tips in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

If your Audi from years close to youngtimers is undergoing a broader renovation using used components, the tips included in the article The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years may be helpful.